1211202011120 has 40 divisors (see below), whose sum is σ = 2843926325280. Its totient is φ = 479683961600.

The previous prime is 1211202011099. The next prime is 1211202011141. The reversal of 1211202011120 is 211102021121.

It is an interprime number because it is at equal distance from previous prime (1211202011099) and next prime (1211202011141).

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1211202011120² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211202011095 and 1211202011104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74942540 + ... + 74958699.

It is an arithmetic number, because the mean of its divisors is an integer number (71098158132).

Almost surely, 2^{1211202011120} is an apocalyptic number.

1211202011120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211202011120 is an abundant number, since it is smaller than the sum of its proper divisors (1632724314160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211202011120 is a wasteful number, since it uses less digits than its factorization.

1211202011120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149901353 (or 149901347 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211202011120 its reverse (211102021121), we get a palindrome (1422304032241).

The spelling of 1211202011120 in words is "one trillion, two hundred eleven billion, two hundred two million, eleven thousand, one hundred twenty".